Awareness

This rune effect adds an interesting effect. The original dagger throw is unchanged, but after that throw, multiple blades are automatically fired out from the Demon Hunter, much like the Fan of Knives skill. These deal 75% weapon damage to all enemies within 10 yards.

This is a tricky skill to use wisely, since 10 yards is fairly short range, almost melee distance, so the bonus effect is of no use unless the Demon Hunter is very near her enemies. It seems like this rune might be designed for a melee DH, to supplement a ranged attack with a free melee strike.